<template>
  <view :id="attrs.id" :class="'_block _' + name + ' ' + attrs.class" :style="attrs.style">
    <block v-for="(n, i) in childs" v-bind:key="i">
      <!-- 图片 -->
      <!-- 占位图 -->
      <image
        v-if="n.name === 'img' && !n.t && ((opts[1] && !ctrl[i]) || ctrl[i] < 0)"
        class="_img"
        :style="n.attrs.style"
        :src="ctrl[i] < 0 ? opts[2] : opts[1]"
        mode="widthFix"
      />
      <!-- 显示图片 -->
      <!-- #ifdef H5 || (APP-PLUS && VUE2) -->
      <img
        v-if="n.name === 'img'"
        :id="n.attrs.id"
        :class="'_img ' + n.attrs.class"
        :style="(ctrl[i] === -1 ? 'display:none;' : '') + n.attrs.style"
        :src="n.attrs.src || (ctrl.load ? n.attrs['data-src'] : '')"
        :data-i="i"
        @load="imgLoad"
        @error="mediaError"
        @tap.stop="imgTap"
        @longpress="imgLongTap"
      />
      <!-- #endif -->
      <!-- #ifndef H5 || (APP-PLUS && VUE2) -->
      <!-- 表格中的图片，使用 rich-text 防止大小不正确 -->
      <rich-text
        v-if="n.name === 'img' && n.t"
        :style="'display:' + n.t"
        :nodes="[{ attrs: { style: n.attrs.style || '', src: n.attrs.src }, name: 'img' }]"
        :data-i="i"
        @tap.stop="imgTap"
      />
      <!-- #endif -->
      <!-- #ifndef H5 || APP-PLUS || MP-KUAISHOU -->
      <image
        v-else-if="n.name === 'img'"
        :id="n.attrs.id"
        :class="'_img ' + n.attrs.class"
        :style="
          (ctrl[i] === -1 ? 'display:none;' : '') +
          'width:' +
          (ctrl[i] || 1) +
          'px;height:1px;' +
          n.attrs.style
        "
        :src="n.attrs.src"
        :mode="!n.h ? 'widthFix' : !n.w ? 'heightFix' : n.m || 'scaleToFill'"
        :lazy-load="opts[0]"
        :webp="n.webp"
        :show-menu-by-longpress="opts[3] && !n.attrs.ignore"
        :image-menu-prevent="!opts[3] || n.attrs.ignore"
        :data-i="i"
        @load="imgLoad"
        @error="mediaError"
        @tap.stop="imgTap"
        @longpress="imgLongTap"
      />
      <!-- #endif -->
      <!-- #ifdef MP-KUAISHOU -->
      <image
        v-else-if="n.name === 'img'"
        :id="n.attrs.id"
        :class="'_img ' + n.attrs.class"
        :style="(ctrl[i] === -1 ? 'display:none;' : '') + n.attrs.style"
        :src="n.attrs.src"
        :lazy-load="opts[0]"
        :data-i="i"
        @load="imgLoad"
        @error="mediaError"
        @tap.stop="imgTap"
      ></image>
      <!-- #endif -->
      <!-- #ifdef APP-PLUS && VUE3 -->
      <image
        v-else-if="n.name === 'img'"
        :id="n.attrs.id"
        :class="'_img ' + n.attrs.class"
        :style="
          (ctrl[i] === -1 ? 'display:none;' : '') +
          'width:' +
          (ctrl[i] || 1) +
          'px;' +
          n.attrs.style
        "
        :src="n.attrs.src || (ctrl.load ? n.attrs['data-src'] : '')"
        :mode="!n.h ? 'widthFix' : !n.w ? 'heightFix' : n.m || ''"
        :data-i="i"
        @load="imgLoad"
        @error="mediaError"
        @tap.stop="imgTap"
        @longpress="imgLongTap"
      />
      <!-- #endif -->
      <!-- 文本 -->
      <!-- #ifdef MP-WEIXIN -->
      <text v-else-if="n.text" :user-select="opts[4] == 'force' && isiOS" decode>{{ n.text }}</text>
      <!-- #endif -->
      <!-- #ifndef MP-WEIXIN || MP-BAIDU || MP-ALIPAY || MP-TOUTIAO -->
      <text v-else-if="n.text" decode>{{ n.text }}</text>
      <!-- #endif -->
      <text v-else-if="n.name === 'br'">\n</text>
      <!-- 链接 -->
      <view
        v-else-if="n.name === 'a'"
        :id="n.attrs.id"
        :class="(n.attrs.href ? '_a ' : '') + n.attrs.class"
        hover-class="_hover"
        :style="'display:inline;' + n.attrs.style"
        :data-i="i"
        @tap.stop="linkTap"
      >
        <node name="span" :childs="n.children" :opts="opts" style="display: inherit" />
      </view>
      <!-- 视频 -->
      <!-- #ifdef APP-PLUS -->
      <view
        v-else-if="n.html"
        :id="n.attrs.id"
        :class="'_video ' + n.attrs.class"
        :style="n.attrs.style"
        v-html="n.html"
        @vplay.stop="play"
      />
      <!-- #endif -->
      <!-- #ifndef APP-PLUS -->
      <video
        v-else-if="n.name === 'video'"
        :id="n.attrs.id"
        :class="n.attrs.class"
        :style="n.attrs.style"
        :autoplay="n.attrs.autoplay"
        :controls="n.attrs.controls"
        :loop="n.attrs.loop"
        :muted="n.attrs.muted"
        :object-fit="n.attrs['object-fit']"
        :poster="n.attrs.poster"
        :src="n.src[ctrl[i] || 0]"
        :data-i="i"
        @play="play"
        @error="mediaError"
      />
      <!-- #endif -->
      <!-- #ifdef H5 || APP-PLUS -->
      <iframe
        v-else-if="n.name === 'iframe'"
        :style="n.attrs.style"
        :allowfullscreen="n.attrs.allowfullscreen"
        :frameborder="n.attrs.frameborder"
        :src="n.attrs.src"
      />
      <embed v-else-if="n.name === 'embed'" :style="n.attrs.style" :src="n.attrs.src" />
      <!-- #endif -->
      <!-- #ifndef MP-TOUTIAO || ((H5 || APP-PLUS) && VUE3) -->
      <!-- 音频 -->
      <audio
        v-else-if="n.name === 'audio'"
        :id="n.attrs.id"
        :class="n.attrs.class"
        :style="n.attrs.style"
        :author="n.attrs.author"
        :controls="n.attrs.controls"
        :loop="n.attrs.loop"
        :name="n.attrs.name"
        :poster="n.attrs.poster"
        :src="n.src[ctrl[i] || 0]"
        :data-i="i"
        @play="play"
        @error="mediaError"
      />
      <!-- #endif -->
      <view
        v-else-if="(n.name === 'table' && n.c) || n.name === 'li'"
        :id="n.attrs.id"
        :class="'_' + n.name + ' ' + n.attrs.class"
        :style="n.attrs.style"
      >
        <node v-if="n.name === 'li'" :childs="n.children" :opts="opts" />
        <view
          v-else
          v-for="(tbody, x) in n.children"
          v-bind:key="x"
          :class="'_' + tbody.name + ' ' + tbody.attrs.class"
          :style="tbody.attrs.style"
        >
          <node
            v-if="tbody.name === 'td' || tbody.name === 'th'"
            :childs="tbody.children"
            :opts="opts"
          />
          <block v-else v-for="(tr, y) in tbody.children" v-bind:key="y">
            <view
              v-if="tr.name === 'td' || tr.name === 'th'"
              :class="'_' + tr.name + ' ' + tr.attrs.class"
              :style="tr.attrs.style"
            >
              <node :childs="tr.children" :opts="opts" />
            </view>
            <view v-else :class="'_' + tr.name + ' ' + tr.attrs.class" :style="tr.attrs.style">
              <view
                v-for="(td, z) in tr.children"
                v-bind:key="z"
                :class="'_' + td.name + ' ' + td.attrs.class"
                :style="td.attrs.style"
              >
                <node :childs="td.children" :opts="opts" />
              </view>
            </view>
          </block>
        </view>
      </view>

      <!-- 富文本 -->
      <!-- #ifdef H5 || ((MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE2) -->
      <rich-text
        v-else-if="!n.c && !handler.isInline(n.name, n.attrs.style)"
        :id="n.attrs.id"
        :style="n.f"
        :user-select="opts[4]"
        :nodes="[n]"
      />
      <!-- #endif -->
      <!-- #ifndef H5 || ((MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE2) -->
      <rich-text
        v-else-if="!n.c"
        :id="n.attrs.id"
        :style="'display:inline;' + n.f"
        :preview="false"
        :selectable="opts[4]"
        :user-select="opts[4]"
        :nodes="[n]"
      />
      <!-- #endif -->
      <!-- 继续递归 -->
      <view
        v-else-if="n.c === 2"
        :id="n.attrs.id"
        :class="'_block _' + n.name + ' ' + n.attrs.class"
        :style="n.f + ';' + n.attrs.style"
      >
        <node
          v-for="(n2, j) in n.children"
          v-bind:key="j"
          :style="n2.f"
          :name="n2.name"
          :attrs="n2.attrs"
          :childs="n2.children"
          :opts="opts"
        />
      </view>
      <node v-else :style="n.f" :name="n.name" :attrs="n.attrs" :childs="n.children" :opts="opts" />
    </block>
  </view>
</template>
<script module="handler" lang="wxs">
// 行内标签列表
const inlineTags = {
  abbr: true,
  b: true,
  big: true,
  code: true,
  del: true,
  em: true,
  i: true,
  ins: true,
  label: true,
  q: true,
  small: true,
  span: true,
  strong: true,
  sub: true,
  sup: true,
};
/**
 * @description 判断是否为行内标签
 */
module.exports = {
  isInline(tagName, style) {
    return inlineTags[tagName] || (style || '').indexOf('display:inline') !== -1;
  },
};
</script>
<script>
import node from './node';
export default {
  name: 'node',
  options: {
    // #ifdef MP-WEIXIN
    virtualHost: true,
    // #endif
    // #ifdef MP-TOUTIAO
    addGlobalClass: false,
    // #endif
  },
  data() {
    return {
      ctrl: {},
      // #ifdef MP-WEIXIN
      isiOS: uni.getSystemInfoSync().system.includes('iOS'),
      // #endif
    };
  },
  props: {
    name: String,
    attrs: {
      type: Object,
      default() {
        return {};
      },
    },
    childs: Array,
    opts: Array,
  },
  components: {
    // #ifndef (H5 || APP-PLUS) && VUE3
    node,
    // #endif
  },
  mounted() {
    this.$nextTick(() => {
      for (
        this.root = this.$parent;
        this.root.$options.name !== 'mp-html';
        this.root = this.root.$parent
      );
    });
    // #ifdef H5 || APP-PLUS
    if (this.opts[0]) {
      let i;
      for (i = this.childs.length; i--; ) {
        if (this.childs[i].name === 'img') break;
      }
      if (i !== -1) {
        this.observer = uni.createIntersectionObserver(this).relativeToViewport({
          top: 500,
          bottom: 500,
        });
        this.observer.observe('._img', (res) => {
          if (res.intersectionRatio) {
            this.$set(this.ctrl, 'load', 1);
            this.observer.disconnect();
          }
        });
      }
    }
    // #endif
  },
  beforeDestroy() {
    // #ifdef H5 || APP-PLUS
    if (this.observer) {
      this.observer.disconnect();
    }
    // #endif
  },
  methods: {
    // #ifdef MP-WEIXIN
    toJSON() {
      return this;
    },
    // #endif
    /**
     * @description 播放视频事件
     * @param {Event} e
     */
    play(e) {
      const i = e.currentTarget.dataset.i;
      const node = this.childs[i];
      this.root.$emit('play', {
        source: node.name,
        attrs: {
          ...node.attrs,
          src: node.src[this.ctrl[i] || 0],
        },
      });
      // #ifndef APP-PLUS
      if (this.root.pauseVideo) {
        let flag = false;
        const id = e.target.id;
        for (let i = this.root._videos.length; i--; ) {
          if (this.root._videos[i].id === id) {
            flag = true;
          } else {
            this.root._videos[i].pause(); // 自动暂停其他视频
          }
        }
        // 将自己加入列表
        if (!flag) {
          const ctx = uni.createVideoContext(
            id,
            // #ifndef MP-BAIDU
            this,
            // #endif
          );
          ctx.id = id;
          if (this.root.playbackRate) {
            ctx.playbackRate(this.root.playbackRate);
          }
          this.root._videos.push(ctx);
        }
      }
      // #endif
    },

    /**
     * @description 图片点击事件
     * @param {Event} e
     */
    imgTap(e) {
      const node = this.childs[e.currentTarget.dataset.i];
      if (node.a) {
        this.linkTap(node.a);
        return;
      }
      if (node.attrs.ignore) return;
      // #ifdef H5 || APP-PLUS
      node.attrs.src = node.attrs.src || node.attrs['data-src'];
      // #endif
      this.root.$emit('imgtap', node.attrs);
      // 自动预览图片
      if (this.root.previewImg) {
        uni.previewImage({
          // #ifdef MP-WEIXIN
          showmenu: this.root.showImgMenu,
          // #endif
          // #ifdef MP-ALIPAY
          enablesavephoto: this.root.showImgMenu,
          enableShowPhotoDownload: this.root.showImgMenu,
          // #endif
          current: parseInt(node.attrs.i),
          urls: this.root.imgList,
        });
      }
    },

    /**
     * @description 图片长按
     */
    imgLongTap(e) {
      // #ifdef APP-PLUS
      const attrs = this.childs[e.currentTarget.dataset.i].attrs;
      if (this.opts[3] && !attrs.ignore) {
        uni.showActionSheet({
          itemList: ['保存图片'],
          success: () => {
            const save = (path) => {
              uni.saveImageToPhotosAlbum({
                filePath: path,
                success() {
                  uni.showToast({
                    title: '保存成功',
                  });
                },
              });
            };
            if (this.root.imgList[attrs.i].startsWith('http')) {
              uni.downloadFile({
                url: this.root.imgList[attrs.i],
                success: (res) => save(res.tempFilePath),
              });
            } else {
              save(this.root.imgList[attrs.i]);
            }
          },
        });
      }
      // #endif
    },

    /**
     * @description 图片加载完成事件
     * @param {Event} e
     */
    imgLoad(e) {
      const i = e.currentTarget.dataset.i;
      /* #ifndef H5 || (APP-PLUS && VUE2) */
      if (!this.childs[i].w) {
        // 设置原宽度
        this.$set(this.ctrl, i, e.detail.width);
      } else if ((this.opts[1] && !this.ctrl[i]) || this.ctrl[i] === -1) {
        // 加载完毕，取消加载中占位图
        this.$set(this.ctrl, i, 1);
      }
      /* #endif */
      this.checkReady();
    },

    /**
     * @description 检查是否所有图片加载完毕
     */
    checkReady() {
      if (this.root && !this.root.lazyLoad) {
        this.root._unloadimgs -= 1;
        if (!this.root._unloadimgs) {
          setTimeout(() => {
            this.root
              .getRect()
              .then((rect) => {
                this.root.$emit('ready', rect);
              })
              .catch(() => {
                this.root.$emit('ready', {});
              });
          }, 350);
        }
      }
    },

    /**
     * @description 链接点击事件
     * @param {Event} e
     */
    linkTap(e) {
      const node = e.currentTarget ? this.childs[e.currentTarget.dataset.i] : {};
      const attrs = node.attrs || e;
      const href = attrs.href;
      this.root.$emit(
        'linktap',
        Object.assign(
          {
            innerText: this.root.getText(node.children || []), // 链接内的文本内容
          },
          attrs,
        ),
      );
      if (href) {
        if (href[0] === '#') {
          // 跳转锚点
          this.root.navigateTo(href.substring(1)).catch(() => {});
        } else if (href.split('?')[0].includes('://')) {
          // 复制外部链接
          if (this.root.copyLink) {
            // #ifdef H5
            window.open(href);
            // #endif
            // #ifdef MP
            uni.setClipboardData({
              data: href,
              success: () =>
                uni.showToast({
                  title: '链接已复制',
                }),
            });
            // #endif
            // #ifdef APP-PLUS
            plus.runtime.openWeb(href);
            // #endif
          }
        } else {
          // 跳转页面
          uni.navigateTo({
            url: href,
            fail() {
              uni.switchTab({
                url: href,
                fail() {},
              });
            },
          });
        }
      }
    },

    /**
     * @description 错误事件
     * @param {Event} e
     */
    mediaError(e) {
      const i = e.currentTarget.dataset.i;
      const node = this.childs[i];
      // 加载其他源
      if (node.name === 'video' || node.name === 'audio') {
        let index = (this.ctrl[i] || 0) + 1;
        if (index > node.src.length) {
          index = 0;
        }
        if (index < node.src.length) {
          this.$set(this.ctrl, i, index);
          return;
        }
      } else if (node.name === 'img') {
        // #ifdef H5 && VUE3
        if (this.opts[0] && !this.ctrl.load) return;
        // #endif
        // 显示错误占位图
        if (this.opts[2]) {
          this.$set(this.ctrl, i, -1);
        }
        this.checkReady();
      }
      if (this.root) {
        this.root.$emit('error', {
          source: node.name,
          attrs: node.attrs,
          // #ifndef H5 && VUE3
          errMsg: e.detail.errMsg,
          // #endif
        });
      }
    },
  },
};
</script>
<style>
/* a 标签默认效果 */
._a {
  padding: 1.5px 0 1.5px 0;
  color: #366092;
  word-break: break-all;
}

/* a 标签点击态效果 */
._hover {
  text-decoration: underline;
  opacity: 0.7;
}

/* 图片默认效果 */
._img {
  max-width: 100%;
  -webkit-touch-callout: none;
}

/* 内部样式 */

._block {
  display: block;
}

._b,
._strong {
  font-weight: bold;
}

._code {
  font-family: monospace;
}

._del {
  text-decoration: line-through;
}

._em,
._i {
  font-style: italic;
}

._h1 {
  font-size: 2em;
}

._h2 {
  font-size: 1.5em;
}

._h3 {
  font-size: 1.17em;
}

._h5 {
  font-size: 0.83em;
}

._h6 {
  font-size: 0.67em;
}

._h1,
._h2,
._h3,
._h4,
._h5,
._h6 {
  display: block;
  font-weight: bold;
}

._image {
  height: 1px;
}

._ins {
  text-decoration: underline;
}

._li {
  display: list-item;
}

._ol {
  list-style-type: decimal;
}

._ol,
._ul {
  display: block;
  padding-left: 40px;
  margin: 1em 0;
}

._q::before {
  content: '"';
}

._q::after {
  content: '"';
}

._sub {
  font-size: smaller;
  vertical-align: sub;
}

._sup {
  font-size: smaller;
  vertical-align: super;
}

._thead,
._tbody,
._tfoot {
  display: table-row-group;
}

._tr {
  display: table-row;
}

._td,
._th {
  display: table-cell;
  vertical-align: middle;
}

._th {
  font-weight: bold;
  text-align: center;
}

._ul {
  list-style-type: disc;
}

._ul ._ul {
  margin: 0;
  list-style-type: circle;
}

._ul ._ul ._ul {
  list-style-type: square;
}

._abbr,
._b,
._code,
._del,
._em,
._i,
._ins,
._label,
._q,
._span,
._strong,
._sub,
._sup {
  display: inline;
}

/* #ifdef APP-PLUS */
._video {
  width: 300px;
  height: 225px;
}
/* #endif */
</style>
